Refactor preference syncing.

chrome/browser/sync/glue/generic_change_processor.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/sync/glue/generic_change_processor.h"
+
+#include "chrome/browser/sync/glue/model_associator.h"
+#include "chrome/browser/sync/syncable_service.h"
+
+namespace browser_sync {
+
+GenericChangeProcessor::GenericChangeProcessor(
+    SyncableService* local_service,
+    UnrecoverableErrorHandler* error_handler)
+    : ChangeProcessor(error_handler),
+      local_service_(local_service) {
+  DCHECK(local_service_);
+}
+GenericChangeProcessor::~GenericChangeProcessor() {
+  // Set to null to ensure it's not used after destruction.
+  local_service_ = NULL;
+}
+
+void GenericChangeProcessor::ApplyChangesFromSyncModel(
+    const sync_api::BaseTransaction* trans,
+    const sync_api::SyncManager::ChangeRecord* changes,
+    int change_count) {
+  local_service_->ApplyChangesFromSync(trans, changes, change_count);
+}
+
+void GenericChangeProcessor::StartImpl(Profile* profile) {}
+
+void GenericChangeProcessor::StopImpl() {}
+
+}  // namespace browser_sync